Your best bet is to order one from valentine1 direct. I just ordered mine yesterday. For $399 $15 shipping. Brand new with all the up to date software
By the time you buy a used on with possible missing cables etc and getting it updated if it isn't already, your going to be spending the same of a new one.
Order new and save yourself the headache along with the time searching for me.
I looked for a few months. Had no luck so I just decided to order it yesterday direct.
2014 M5 Comp Package.